Andy Lowe, a Ubercart Developer read my post I wrote recently on Ecommerce – which cart should I use? and had some comments on it. His comments and insight were very helpful and he provides some great information about Ubercart that many might not understand (including myself!). So I thought I would just repost his comment that he made on the article for your information:

Disclaimer: I am an Ubercart developer:

Chase, This is a great analysis! I have used, or at least tested all of these e-commerce systems and, for the most part, you are spot on. If it were me, I would recommend Zen Cart over OScommerce in almost every situation. For those people who don’t know, Zen Cart is a fork of OScommerce. Zen Cart was forked for all the right reasons which I won’t go into, but the result is better code and a better community around Zen Cart IMHO.

Magento is a great stand alone cart. You are correct, it is a little resource intensive, but that is the price you pay for a flexible feature rich cart.

WP E-Commerce is a good solution for sites which are mainly blogging with a little e-commerce on the side. Not exactly feature rich, but easy to use and well suited to what most Word Press users need.

Warning: Ubercart sales pitch follows:
After years of looking at e-commerce solutions and running multiple e-commerce sites for a living, I arrived at one basic truth. A successful E-commerce site includes a good CMS. Her is how I arrived at this. Anyone can put up an e-commerce site. The hard part is getting sales. You won’t get sales without visitors. You won’t get visitors without search engine (Google) placement. You wont’ get search engine placement without good, fresh content. You won’t be able to create good, fresh content without a Content Management System to manage it. Therefore a successful e-commerce needs good CMS integration. This is why we designed Ubercart to be fully integrated into Drupal. Not only does Ubercart gain good content from Drupal, but we also get all the great features, modules, and themes of Drupal.

Here are a few features Ubercart supports which Chase didn’t list:
Paypal & Google Checkout
Linkpoint API
Purchase with / without an account
Order / product import and export
Terms of service tool – (force accept)
Control redirection after adding product to cart
Newsletter Feature
Polls
Manufactures Block
Google Sitemap tool
A good rating and review system
Authorize.net integration
And many more.
For more information on Ubercart, go to http://www.ubercart.org

Peace
Andy